Stenozygum comptum (Stenozygum comptum)

Stenozygum comptum - Photo (c) Kersten Krause This weekend a friend forwarded two images to me of a Strachiine bug photographed by Kersten Krause on Bali, Indonesia, with a request for help in IDing it. That was an excersise in web searching skills that took me about a day or so with meager results. In the end I contacted prof. David Rider (NDSU) for help with documentation (and his thoughts on the matter of course :o) as not everything that would appear useful is available online. It turns out that the more recent revisions of the Strachiini and of the genus Stenozygum for the Indo-Astralian region have missed to include this species completely(!) so in the end all we have is the original description of Stenozygum comptum from the isle of Flores by Gustav Breddin. Luckily, his publication includes a good drawing that really fits like a glove (as well as the description) and of course Flores is just a small hop away from Bali. Also, all the other species ever described from the region do not (at all) fit so well. So I'm quite confident that this ID should most likely be correct and David agrees.
This makes for the images shot by Kersten to be the first ones known to either of us to be identified as such, so I've asked Kersten for his permission to publish these on the internet and he has kindly agreed to that.
The drawing used in the side by side is the drawing made by Breddin for the original description.
https://www.jungledragon.com/image/69880/stenozygum_comptum_breddin_1899_photo_kersten_krause.html Heteroptera,Pentatomidae,Pentatominae,Stenozygum,Stenozygum comptum,Strachiini

Appearance

Original description by Breddin:
Stenozygum comptum n. spec.
Fem: Corpore subelongato. Capitis parte anteoculari subgraciliter triangulari, marginibus anguste reflexis. Occipite subobsolete punctulato, punctulis in vittas tres confertis (una mediana latiore, duabus lateralibus angustis, ocellos tangentibus). Margine pronoti antico distincte filiformiter convexo, retorsum linea impressa subtiliter punctata terminato; area cicatricali leviter calloso-elevata, glabra, retrorsum linea impressa, obsoletissime punctulata, medio subinterrupta inclusa; hac linea retrorsum ruga transversali distinctiore iterum terminata; parte postica sat remote ac rude punctata, rugosa; margine postico recte truncato; angulis posticis omnino rotundato-deletis. Scutelli callositate basali parum elevata, sat brevi, glabra; scutello pone callum subrugoso-punctato; parte post-frenali impunctata, graciliter aiigustata, apice imo corrotundata. Corio clavoque dense punctatis, lituris quibusdam albescentibus impunctatis.
Tibiis supra planis, vix marginatis; tarsis minusculis. Antennis medio-cribus, articulo secundo dimidio articuli tertii subaequilongo; articulo tertio quinto vix, quarto distincte breviore.

Supra nigro-viride, metallescens. Jugis, maculula utrimque obliqua intraoculari lituram ingorum subtangente, macula subquadrata mediana areae cicatricalis pronoti, scutelli callo basali apiceque sat longo, linea tenui inter se coniunctis, capitis inferioris maxima parte margineque diffuso abdominis aurantiaco-flavis.
Pronoti et prostethii marginibus antero-lateralibus pone medium dilatatis, pronoti praeterea marginibus imis antico et posticis lineaque angusta mediana areae postcicatricalis, corii margine costali (ante apicem abbreviato), eiusdem fasciola subobliqua, marginem costalem cum angulo scutellari corii coniungente et rimulae extremitatem tangente, marginibus anguli apicalis interioris lineisique duabus angustissimis corii abbreviatis (altera in rimulae margine exteriore medio ducta, altera ex angulo scutellari exeunte et suturam clavi intus sequente), linea subpercurrente clavi corporeque inferiore fere toto cum coxis, trochanteribus et femorum maxima parte albido-luteis.

Capite superiore fere toto cum marginibus lateralibus reflexis lineaque impressa capitis inferioris supra scrobes antennales ad insertionem rostri producta, pro-, meso-, metastethii maculis singulis subannuliformibus intus apertis, maculam aurantiacam includentibus, maculis duabus rotundatis mesosterni, ventris segmenti secundi linea basali circa medium, maculis ventris utrimque quattuor seriatim positis (in segmentis 2—5) et a linea ficta mediana quam a margine ventris distincte lougius distantibus, segmenti sexti lineola mediana, valvulis genitalibus basalibus, antennis, rostro fere toto, femorum apicibus (bis supra luteo-lineatis), tibiis tarsisque coerulescenti-nigris vel nigris. Dorso abdominis violaceo-nigro, nitente; connexivo laete fiavo, Alis leviter fumigatis, apicem versus obscurioribus; nervis nigris. Membrana nigra, hyalino-marginata.

Long. corp. cum memb. 9mm; lat. max. abd. 4,5mm.
Sapit, mense Aprili (coll. auct.).

Species pulchra, Sten. bicolori Dall. et triculori Stl., ut videtur, vicina, differt coloribus in scutello corioque aliter dispositis et occipite vitta lutescenti vel rubra destituto.

Stenozygum comptum Breddin 1899 Photo (c) Kersten Krause This weekend a friend forwarded two images to me of a Strachiine bug photographed by Kersten Krause on Bali, Indonesia, with a request for help in IDing it. That was an excersise in web searching skills that took me about a day or so with meager results. In the end I contacted prof. David Rider (NDSU) for help with documentation (and his thoughts on the matter of course :o) as not everything that would appear useful is available online. It turns out that the more recent revisions of the Strachiini and of the genus Stenozygum for the Indo-Astralian region did not include this species as it was deemed to not be included in Stenozygum (but without proper motivation?!?), so in the end all we have is the original description of Stenozygum comptum from the isle of Flores by Gustav Breddin. Luckily, his publication includes a good drawing that really fits like a glove (as well as the description) and of course Flores is just a small hop away from Bali. Also, all the other species ever described from the region do not (at all) fit so well. So I'm quite confident that this ID should most likely be correct and David agrees.
This makes for the images shot by Kersten to be the first ones known to either of us to be identified as such, so I've asked Kersten for his permission to publish these on the internet and he has kindly agreed to that.
The drawing used in the side by side is the drawing made by Breddin for the original description.
https://www.jungledragon.com/image/69879/stenozygum_comptum_-_photo_kersten_krause.html Heteroptera,Pentatomidae,Pentatominae,Stenozygum,Stenozygum comptum,Strachiini

Distribution

S. comptum itself was originally described from the Indonesian isle of Flores by Gustav Breddin in 1899. It has now also been recorded from Bali and may have a wider range, but knowledge on this is lacking.

References:

Some text fragments are auto parsed from Wikipedia.

Breddin, G. (1899) Hemiptera Insulae Lombok in Museo Hamburgensi asservata adiectis speciebus nonnullis, quas continet collectio auctoris. - Beiheft 2 Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, vol.XVI, Beiheft 2, pp.155-194, w. 1 Plate.
Text: https://biodiversitylibrary.org/page/29137379
Plate (c.f. fig.3): https://biodiversitylibrary.org/page/29137411

Taxonomy
Kingdom	Animalia
Division	Arthropoda
Class	Insecta
Order	Hemiptera
Family	Pentatomidae
Genus	Stenozygum
Species	Stenozygum comptum

Photographed in
Indonesia